Answer:
When a gas is heated, the molecules move faster, bump into each other, and spread apart. Because the molecules are spread apart, they take up more space. They are less dense.
The United States has about which percentage of the world's coal reserves?
A- 5%
B-20%
C-50%
D- 90%
Answer:
B - 20%
Explanation:
Answer:
B
Explanation:
The united states has 22% of the world's Coal reserve so if you round that up its 20%
Only answer if you know 100% its correct. this means if your'e NOT sure, don't answer.
Answer:
D. recycling aluminum cans and glass bottles
Explanation:
it's the only one that makes sense because if its a short trip you should walk, you should use reusable bags, and turn off the water while brushing your teeth.
Hope this helps and have a wonderful day/night/afternoon
Answer:
d. recycling aluminum cans and bottles....
Explanation:
this helps to conserve the materials needed to make those objects, which can then be used to make something else...
Hope this helps!
-heyo
You have a substance with a length of 2 cm, width of 3 cm, and a height of 4 cm. Its density is known to be .5 g/cm3. What is the mass of the sample you have?
Answer:
12 grams
Explanation:
D = m/V
0.5g/[tex]cm^3[/tex] = m/(2*3*4)
[tex]\frac{0.5g}{cm^3} = \frac{m}{24cm^3}[/tex]
m = 12g
A sample of a pure substance with a density of 3 g/mL is separated into two pieces. One piece has a mass of 50 g and the other piece has a mass of 25 g.
What is the volume of the smaller one?
Answer:
8.3ml
Explanation:
to get volume u have to divide 25g over the density, i rounded to the nearest tenth, if you don't want to then write out the full number with all the decimals
Answer fast and correct!
Answer:
A. Provide both heat and power to homes
Manufacturers who meet the ENERGY STAR standards get to use the ENERGY STAR logo on their products and advertising. Consumers, however, do not get the guarantee their products meet those standards
A. True
B. False
Select the Independent, Dependent and Controlled Variables
Answer:
The independent variable is graphed on the x-axis. The dependent variable, which changes in response to the independent variable, is graphed on the y-axis. Controlled variables are usually not graphed because they should not change.
Answer:
The independent variable is graphed on the x-axis. The dependent variable, which changes in response to the independent variable, is graphed on the y-axis. Controlled variables are usually not graphed because they should not change.
Explanation:
fill in the blanks: label the different parts of the rock cycle where igneous, sedimentary, and metamorphic rock are formed.
Answer:
☞rock cycle
=> The rock cycle is a basic concept in geology that describes transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. Each rock type is altered when it is forced out of its equilibrium conditions.
=> There are three main kinds of rocks: igneous rock, metamorphic rock, and sedimentary rock. ... It can erode into sediment or melt into magma. It is formed under extreme pressure and temperature deep inside mountain chains.
Explanation:
What is needed for photosynthesis to take place? (Select all that apply.)
carbon dioxide
glucose
energy
water
all but energy i think but if not its a and d
Explanation:
Answer:
carbon dioxide, water, and sunlight
Explanation:
These things .is needed for photosynthesis to take place. By the way, sunlight is Energy.
Sam and Shania are doing an experiment with water and salt water.
What type of data might be collected for this experiment?
a.
how much salt is in the water
b.
how quickly the water in each beaker comes to a boil
c.
the temperature of the water
d.
how quickly the water evaporates
A sample of a pure substance with a density of 3 g/mL is separated into two pieces. One piece has a mass of 50 g and the other piece has a mass of 25 g.
What is the density of the larger piece?
please right a lot if you can thanks
Answer:
The terrarium model shows the many different aspects of life. The dirt shows the geosphere, which is the ground thaat the plant can grow in. The biosphere is represented by the plant growing, and the hydrosphere is the water that you use to water the plant, and the condensation that will gather on the lid. The atmosphere is the air inside the jar.
Explanation:
Each of the above show how the environment works.
Which fossil fuel does the United States have the most reserves of?
HELP QUICK
You have a substance with a length of 2 cm, width of 3 cm, and a height of 4 cm. Its density is known to be .5 g/cm3. What is the mass of the sample you have?
Explanation:
They are related by the the density triangle.
Explanation:
They are related by the the density triangle.
mcdn1.teacherspayteachers.com
d =
m
V
m = d×V
V =
m
d
DENSITY
Density is defined as mass per unit volume.
d =
m
V
Example:
A brick of salt measuring 10.0 cm x 10.0 cm x 2.00 cm has a mass of 433 g. What is its density?
Step 1: Calculate the volume
V = lwh = 10.0 cm × 10.0 cm × 2.00 cm = 200 cm³
Step 2: Calculate the density
d =
m
V
=
433
g
200
c
m
³
= 2.16 g/cm³
MASS
d =
m
V
We can rearrange this to get the expression for the mass.
m = d×V
Example:
If 500 mL of a liquid has a density of 1.11 g/mL, what is its mass?
m = d×V = 500 mL ×
1.11
g
1
m
L
= 555 g
VOLUME
d =
m
V
We can rearrange this to get the expression for the volume.
V =
m
d
Example:
What is the volume of a bar of gold that has a mass of 14.83 kg. The density of gold is 19.32 g/cm³.
Step 1: Convert kilograms to grams.
14.83 kg ×
1000
g
1
k
g
= 14 830 g
Step 2: Calculate the volume.
V =
m
d
= 14 830 g ×
1
c
m
³
19.32
g
= 767.6 cm³
Weather fronts tend to produce changes in the weather
True
False
Answer:
True
Explanation:
Imagine that you are in charge of helping a town named
Greenville choose the form of energy best suited to the
needs and preferences of its citizens. Use this information
to help you make a decision:
• The people of Greenville want to reduce their reliance
on coal for electricity
• Greenville is located far from any coastlines.
• Greenville has a large amount of productive farmland.
• Greenville weather is calm for much of the year.
Which form of energy would best suit Greenville's needs and preferences?
A. Natural gas
B. Biomass
ОООО
C. Tidal power
OD. Wind power
SUBMIT
Answer:
Biomas is the answer
I am sure about it
just go for it
Which statement best defines the center of an atom and what it is made of?
The center of an atom is the electron, and it is made up of protons.
The center of an atom is the nucleus, and it is made up of protons and neutrons.
The center of an atom is the proton, and it is made up of electrons and neutrons.
The center of an atom is the nucleus, and it is made up of charges.
A sample of a pure substance with a density of 3 g/mL is separated into two pieces. One piece has a mass of 50 g and the other piece has a mass of 25 g.
What is the density of the larger piece?
Answer: The two pieces have the same density of 3g/mL.
Explanation: the density won't change based on the size or amount of the substance. the density is pre-set (for every X there is y weight, this is always constant).
What is a difference between ferns and gymnosperms?
ferns are nonvascular plants
gymnosperms have seeds
ferns have seeds
gymnosperms are nonvascular plants
Answer:
b gyrosperms have seeds
Explanation:
Answer:
gymnosperms have no seeds
Explanation:
Write an equation for the reaction that takes place in a luminous flame assuming the laboratory gas is Butane
Answer:
Fire's basic combustion equation is: fuel + oxygen —> carbon dioxide + water, a line many of us had drummed into us by school teachers. However, combustion reactions do not proceed directly from oxygen to carbon dioxide.
Explanation:
Fire's basic combustion equation is: fuel + oxygen —> carbon dioxide + water, a line many of us had drummed into us by school teachers. However, combustion reactions do not proceed directly from oxygen to carbon dioxide.
The equation for luminous flame assuming the laboratory gas is butane is fuel + oxygen → [tex]CO_{2} + H_{2}O[/tex].
What is butane?Natural gas, the source of butane, would be a colorless, odorless, but also shapeless gas by nature. This kind of gas is extremely prevalent throughout the world and seems to be comparatively cheap to mine as well as produce.
What is a luminous flame?A burning flame that is clearly seen would be called a luminous flame.
When fuel is reacted with oxygen gas then it will form carbon dioxide and water. It can be written as:
fuel + oxygen → [tex]CO_{2} + H_{2}O[/tex].
To know more about luminous flame and butane
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A patient comes to the doctors office complaining of gas. Which active ingredients is the physician most likely to recommend for the patient complaints?
Help asap! if u answer correct Ill give brainliest!!
Answer:
I believe it means The universe will exploder or The universe is expanding
Explanation:
You will observe the orbits and you have to determine how many planets are in the habitable zone and how many are orbiting successfully. Based on the mass of the star and the placements of the planets, planets may swerve into the star and vanish, collide with each other and vanish, float out of orbit, or all orbit successfully. You will record this information and each planet's orbit in your data table for each trial. If the mass of the sun is 1x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
If the mass of the sun is 2x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
If the mass of the sun is 3x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
Answer:t of orbit, or all orbit successfully. You will record this information and each planet's orbit in your data table for each trial. If the mass of the sun is 1x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
If the mass of the sun is 2x, planets will fall into the habitable zone if I place a planet in orbits (Orbit=1,2,3,4,5,6,7,8), and all planets will orbit the sun successfully.
If the mass of the sun is 3x, planets will fall into the habitable zo
Explanation:
Please Help me (I'll give brainlest) (LIMITED)
Answer: A) inherited traits
Explanation: theses are all traits that plants can inherit from its parents
what is the name of a mixture that is easily seen and separated???
Answer:
suspension
Explanation:
a mixture in which particles can be seen and easily separated by settling or filtration.
hope this helps
Answer:
Heterogeneous
Explanation:
The difference between Homogeneous and Heterogeneous mixtures are homogeneous are blended evenly and inseparable like soup, while heterogenous are like salads, you can take it apart
What are some of the benefits of hydropower? select all that apply
Select 3 correct answer(s)
Question 2 options:
It can also provide flood control and water supply
It is renewable and reliable
It can prevent fish from swimming upstream
It reduces the amount of carbon dioxide released into the atmosphere during energy production
Answer: It can provide flood control and water supply. It is renewable and reliable. It reduces the amount of carbon dioxide released into the atmosphere during energy production. I believe these are the answers.
PLEASE HELP I'LL MARK BRAINLIEST
11.
(06.03 MC)
Two positions of the sun, moon, and Earth are described below:
Position A: Moon and sun are at right angles to each other relative to Earth
Position B: Moon is between the sun and Earth
Which statement is true regarding the type of tides that can occur? (1 point)
A neap tide can occur for position A but not for position B.
A spring tide can occur for position A but not for position B.
A spring tide can occur for both position A and position B.
A neap tide can occur for both position A and position B.
THERE'S NO PICTURE SORRY
Answer:
A neap tide can occur for position A but not for position B.
Explanation: Position B is a spring tide.
In which of the following places would you MOST likely an organism classified in the domain Archaea?
A.On human skin
B.On sea ice in Antarctica
C.In the field of a wheat farm
D.In a river flowing through a valley
The corrrect answer is B , On sea ice in Antarctica , it is most likely to find Archaea domain .
What is an Archaea Domain ?
These domain include microorganisms that can survive in the most extreme environments , these are classified in Eukaryota, Eubacteria, and Archaebacteria .
On the basis of research it has been found that many of the Archaea domains have been found on the surface water in cold marine environments .
Therefore it is most likely that Archaea domain to be found on sea ice in Antarctica. Hence correct answer is B .
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HELP! only answer if you know 100% its correct
Answer:
C. Crude oil is found below natural gas reservoirs.
Explanation:
:)
Answer:
Crude oil is found below natural gas
Explanation:
You have a sample with a volume of 55.7 mL and a mass of 67.9 g. Will this sample float in water? Why or why not?
Answer:
No it will not
Explanation:
It will not float because the density is 1.21903052065, it needs to be less than 1 to float